Nanometer Scale Structures Resulting from Graphite Oxidation

1994 ◽  
Vol 332 ◽  
Author(s):  
Marilyn J. Nowakowski ◽  
John M. Vohs ◽  
Dawn A. Bonnell
Keyword(s):  
Electronic Structure ◽  
Scanning Tunneling Microscopy ◽  
Oxygen Plasma ◽  
Pyrolytic Graphite ◽  
Scanning Tunneling ◽  
Nanometer Scale ◽  
Tunneling Microscopy ◽  
Graphite Oxidation ◽  
Local Electronic Structure ◽  
Scale Structures

ABSTRACTScanning tunneling microscopy (STM) and spectroscopy (STS) were used to characterize highly oriented pyrolytic graphite (HOPG) which was oxidized by two different methods, furnace heating in atmosphere and immersion in oxygen plasma. The character of the surfaces was found to be dissimilar on a micron scale but comparable on a nanometer scale, at which both appear to be comprised of sharp step edges. Variations in local electronic structure near a step edge were compared.

Local Electronic Structure in Ordered Aggregates of Carbon Nanotubes: Scanning Tunneling Microscopy/scanning Tunneling Spectroscopy Study

1998 ◽  
Vol 13 (9) ◽  
pp. 2389-2395 ◽  
Author(s):  
D. L. Carroll ◽  
P. M. Ajayan ◽  
S. Curran
Keyword(s):  
Carbon Nanotubes ◽  
Electronic Structure ◽  
Scanning Tunneling Microscopy ◽  
Local Density ◽  
Scanning Tunneling Spectroscopy ◽  
Tunneling Spectroscopy ◽  
Scanning Tunneling ◽  
Tunneling Microscopy ◽  
Spatially Resolved ◽  
Local Electronic Structure

The recent application of tunneling probes in electronic structure studies of carbon nanotubes has proven both powerful and challenging. Using scanning tunneling microscopy (STM) and scanning tunneling spectroscopy (STS), local electronic properties in ordered aggregates of carbon nanotubes (multiwalled nanotubes and ropes of single walled nanotubes) have been probed. In this report, we present evidence for interlayer (concentric tube) interactions in multiwalled tubes and tube-tube interactions in singlewalled nanotube ropes. The spatially resolved, local electronic structure, as determined by the local density of electronic states, is shown to clearly reflect tube-tube interactions in both of these aggregate forms.

scholarly journals Surface defects and their impact on the electronic structure of Mo-doped CaO films: an STM and DFT study

2014 ◽  
Vol 16 (25) ◽  
pp. 12764-12772 ◽  
Author(s):  
Yi Cui ◽  
Xiang Shao ◽  
Stefano Prada ◽  
Livia Giordano ◽  
Gianfranco Pacchioni ◽  
...  
Keyword(s):  
Electronic Structure ◽  
Dft Calculations ◽  
Scanning Tunneling Microscopy ◽  
Surface Defects ◽  
Dft Study ◽  
Scanning Tunneling ◽  
Tunneling Microscopy ◽  
Local Electronic Structure

Scanning tunneling microscopy and DFT calculations are used to probe the local electronic structure of a Mo-doped CaO film.

Local electronic structure at steps on Au(111) investigated by the thermovoltage in scanning tunneling microscopy

1998 ◽  
Vol 66 (7) ◽  
pp. S161-S165 ◽  
Author(s):  
A. Schneider ◽  
M. Wenderoth ◽  
K.J. Engel ◽  
M.A. Rosentreter ◽  
A.J. Heinrich ◽  
...  
Keyword(s):  
Electronic Structure ◽  
Scanning Tunneling Microscopy ◽  
Scanning Tunneling ◽  
Tunneling Microscopy ◽  
Local Electronic Structure

Nanometer-Scale Pulsed Laser Modification of the Basal Plane of Graphite Observed with Stm

1990 ◽  
Vol 191 ◽  
Author(s):  
M. A. Schildbach ◽  
R. J. Tench ◽  
M. Balooch ◽  
W. J. Siekhaus
Keyword(s):  
Surface Modification ◽  
Scanning Tunneling Microscopy ◽  
Basal Plane ◽  
Pyrolytic Graphite ◽  
Pulsed Laser ◽  
Scanning Tunneling ◽  
Nanometer Scale ◽  
Scale Morphology ◽  
Tunneling Microscopy ◽  
Laser Modification

ABSTRACTScanning tunneling microscopy has been used to document changes in the nanometer-scale morphology of the basal plane of highly oriented pyrolytic graphite after exposure to 7 ns, 1064 nm laser.pulses in air. Surface modification was visible at fluences far below those that produce melting. Damage appears first on step edges and consists of exfoliation of graphite layers and recession of steps through removal of mono- or multilayer patches.

Probing nucleation and growth phenomena on silicon surfaces by scanning tunneling microscopy/spectroscopy

1989 ◽  
Vol 47 ◽  
pp. 28-29
Author(s):  
R.J. Hamers ◽  
U.K. Kohler ◽  
K. Markert ◽  
J.E. Demuth
Keyword(s):  
Electronic Structure ◽  
Scanning Tunneling Microscopy ◽  
Chemical Reactivity ◽  
Real Space ◽  
Nucleation And Growth ◽  
Silicon Surfaces ◽  
Scanning Tunneling ◽  
Tunneling Microscopy ◽  
Surface Geometry ◽  
Local Electronic Structure

Nucleation and growth processes have long been studied using diffraction technique On semiconductor surfaces, localized defects strongly affect both the electron properties of the surfaces as well as their reactivity, therby affecting nucleat and growth. In order to identify the role of local electronic structure, and surface irregularities such as steps and defects, a real-space probe of electronic structure is needed. Scanning tunneling microscopy is capable of probing both the local surface geometry and local electronic structure, permitting adsorption and chemical reactivity to be studied on an atom-by-atom basis.

SCANNING TUNNELING MICROSCOPY OF CLUSTERS ADSORBED ON SUPERPERIODIC LATTICE OF HIGHLY ORIENTED PYROLYTIC GRAPHITE

1996 ◽  
Vol 03 (01) ◽  
pp. 983-986
Author(s):  
N. HORIGUCHI ◽  
A. KASUYA ◽  
Y. NISHINA
Keyword(s):  
Electronic Structure ◽  
Scanning Tunneling Microscopy ◽  
Bias Voltage ◽  
Pyrolytic Graphite ◽  
Scanning Tunneling ◽  
Highly Oriented Pyrolytic Graphite ◽  
Tunneling Microscopy ◽  
Adsorption Sites ◽  
Surface Electronic Structure

We observed superperiodic lattices in clusters deposited on HOPG surfaces by STM. Furthermore, we clearly identified two types of bias-voltage dependences in the corrugation of superperiodic lattices. Cluster adsorption sites are strongly influenced by the superperiodic lattices. On the superperiodic lattices, clusters are found to form arrays. This suggests that one can control the surface electronic structure as well as the cluster array by preparing graphitic sheets with various stacking arrangements.

Room temperature observation of the correlation between atomic and electronic structure of graphene on Cu(110)

RSC Advances ◽  
2016 ◽  
Vol 6 (100) ◽  
pp. 98001-98009 ◽  
Author(s):  
Thais Chagas ◽  
Thiago H. R. Cunha ◽  
Matheus J. S. Matos ◽  
Diogo D. dos Reis ◽  
Karolline A. S. Araujo ◽  
...  
Keyword(s):  
Electronic Structure ◽  
Chemical Vapor Deposition ◽  
Scanning Tunneling Microscopy ◽  
Vapor Deposition ◽  
Room Temperature ◽  
Chemical Vapor ◽  
Scanning Tunneling ◽  
Tunneling Microscopy ◽  
Temperature Observation ◽  
Atomic And Electronic Structure

We have used atomically-resolved scanning tunneling microscopy and spectroscopy to study the interplay between the atomic and electronic structure of graphene formed on copper via chemical vapor deposition.

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